View Compilation Error

0_0_13811063_26606.cpp:1:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_13811063_26606.cpp:2:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_13811063_26606.cpp: In function 'int main()':
0_0_13811063_26606.cpp:57:21: error: 'scanf' was not declared in this scope
  while(scanf("%d",&n) && n)
                     ^
0_0_13811063_26606.cpp:60:27: error: 'memset' was not declared in this scope
   memset(ans,0,sizeof(ans)) ;
                           ^
0_0_13811063_26606.cpp:69:22: error: 'printf' was not declared in this scope
    printf("%d",ans[i]) ;
                      ^
0_0_13811063_26606.cpp:70:10: error: 'puts' was not declared in this scope
   puts("") ;
          ^